The Machine Web

“There’s literally an error code in the HTTP Protocol that goes all the way back to the early nineties,” he says, loading the protocol spec on w3.org. It’s a stark, barren, HTML-era webpage. He scrolls down it until landing on Error Code 402: “It’s called, ‘Payment required.’”
Unlike the other client error codes, there’s no description of a hypertextual function beneath 402-Payment Required. Instead, there’s an intriguing note: This code is reserved for future use.
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